@import url('https://fonts.googleapis.com/css2?family=Public+Sans:ital,wght@0,300..900;1,300..900&display=swap');

:root {
  /* Tonal Layering Palette */
  --primary: #002444;
  --primary-container: #1a3a5c;
  --primary-fixed: #d2e4ff;
  --on-primary-fixed-variant: #2a486b;
  
  --accent: #e87722;
  --accent-dark: #5f2900;
  
  --surface: #faf9fc;
  --surface-low: #f4f3f6;
  --surface-lowest: #ffffff;
  --surface-high: #e9e8eb;
  --surface-highest: #e3e2e5;
  --surface-tint: #436084;
  
  --on-surface: #1a1c1e;
  --on-surface-variant: #43474e;
  --outline-variant: #c3c6cf;
  
  --shadow-sm: 0 4px 12px rgba(26, 28, 30, 0.04);
  --shadow-ambient: 0 16px 32px rgba(26, 28, 30, 0.06);
  --shadow-lg: 0 24px 48px rgba(26, 28, 30, 0.08);
  
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1.5rem;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Public Sans', sans-serif;
  color: var(--on-surface-variant);
  background: var(--surface);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Public Sans', sans-serif;
  line-height: 1.2;
  color: var(--on-surface);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

img {
  max-width: 100%;
  display: block;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Public Sans', sans-serif;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-container), var(--primary));
  transform: translateY(-2px);
  box-shadow: var(--shadow-ambient);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1px solid rgba(195, 198, 207, 0.5); /* Ghost border */
}

.btn-secondary:hover {
  background: var(--surface-highest);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--accent-dark);
}

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(250, 249, 252, 0.95);
  backdrop-filter: blur(12px);
  padding: 10px 0;
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--on-surface);
  font-family: 'Public Sans', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
}

.nav-brand .logo-icon {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  color: var(--on-surface-variant);
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
  color: var(--on-surface);
  background: var(--surface-highest);
}

.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: #fff !important;
  padding: 10px 24px !important;
  border-radius: var(--radius-md) !important;
  font-weight: 600 !important;
}

.nav-cta:hover {
  box-shadow: var(--shadow-ambient);
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--on-surface);
  transition: var(--transition);
  border-radius: 2px;
}

/* Home Navbar Transparent Overrides */
.navbar-home:not(.scrolled) .nav-brand {
  color: #ffffff;
}

.navbar-home:not(.scrolled) .hamburger span {
  background: #ffffff;
}

@media(min-width: 769px) {
  .navbar-home:not(.scrolled) .nav-links a {
    color: rgba(255, 255, 255, 0.85);
  }

  .navbar-home:not(.scrolled) .nav-links a:hover, 
  .navbar-home:not(.scrolled) .nav-links a.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.15);
  }
}

/* HERO */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--surface);
  overflow: hidden;
  padding-top: 80px;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-high);
  color: var(--on-surface);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  color: #ffffff;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero h1 span {
  color: var(--accent);
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.15rem;
  margin-bottom: 36px;
  max-width: 560px;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-float {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 45%;
  max-width: 520px;
  z-index: 1;
  opacity: 0.12;
}

/* STATS */
.stats-bar {
  background: var(--surface);
  padding: 0;
  margin-top: -60px;
  position: relative;
  z-index: 10;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--surface-lowest);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-ambient);
  overflow: hidden;
}

.stat-item {
  padding: 40px 24px;
  text-align: center;
  transition: var(--transition);
  background: var(--surface-lowest);
}

.stat-item:hover {
  background: var(--surface-low);
}

.stat-number {
  font-family: 'Public Sans', sans-serif;
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--on-surface-variant);
  font-weight: 500;
}

/* SECTIONS */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-fixed);
  color: var(--on-primary-fixed-variant);
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 2.4rem;
  margin-bottom: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.section-header p {
  color: var(--on-surface-variant);
  font-size: 1.05rem;
}

/* ABOUT PREVIEW */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--surface-lowest) url('https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?q=80&w=2070&auto=format&fit=crop') center/cover no-repeat;
  box-shadow: var(--shadow-ambient);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image-text {
  display: none; /* Hide text when using photo */
}

.about-content h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.about-content p {
  color: var(--on-surface-variant);
  margin-bottom: 16px;
  font-size: 1.02rem;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 28px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.about-feature .icon {
  width: 44px;
  height: 44px;
  background: var(--surface-highest);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary);
  font-size: 1.2rem;
}

.about-feature h4 {
  font-size: 0.95rem;
  margin-bottom: 2px;
  color: var(--on-surface);
}

.about-feature p {
  font-size: 0.88rem;
  color: var(--on-surface-variant);
  margin: 0;
}

/* SERVICE CARDS */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--surface-lowest);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  /* Replaced border with ambient shadow to enforce No-Line rule */
  box-shadow: var(--shadow-sm);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-ambient);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: var(--surface-high);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--primary);
  font-size: 1.5rem;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--on-surface);
}

.service-card p {
  color: var(--on-surface-variant);
  font-size: 0.92rem;
  margin-bottom: 20px;
  line-height: 1.6;
}

.service-card .learn-more {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.service-card .learn-more:hover {
  gap: 10px;
}

/* CLIENTS STRIP */
.clients-strip {
  background: var(--surface-low);
  padding: 60px 0;
}

.clients-scroll {
  display: flex;
  gap: 40px;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.clients-track {
  display: flex;
  gap: 40px;
  animation: scroll 30s linear infinite;
}

.client-name {
  white-space: nowrap;
  color: var(--on-surface-variant);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 12px 24px;
  background: var(--surface-lowest);
  border-radius: var(--radius-sm);
  /* Ghost border */
  box-shadow: 0 0 0 1px rgba(195, 198, 207, 0.2);
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* PAGE HERO */
.page-hero {
  padding: 160px 0 80px;
  background: var(--surface-low);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero h1 {
  color: var(--on-surface);
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}

.page-hero p {
  color: var(--on-surface-variant);
  font-size: 1.1rem;
  position: relative;
}

/* TEAM CARDS */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.team-card {
  background: var(--surface-lowest);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-ambient);
}

.team-card-header {
  background: var(--surface-high);
  padding: 32px;
  text-align: center;
}

.team-avatar {
  width: 80px;
  height: 80px;
  background: var(--surface-lowest);
  border-radius: var(--radius-full);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--primary);
  font-family: 'Public Sans', sans-serif;
  font-weight: 700;
}

.team-card-header h3 {
  color: var(--on-surface);
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.team-card-header .credentials {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
}

.team-card-header .role {
  color: var(--on-surface-variant);
  font-size: 0.88rem;
  margin-top: 4px;
}

.team-card-body {
  padding: 28px;
}

.team-card-body p {
  color: var(--on-surface-variant);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.team-section-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-weight: 600;
  margin: 16px 0 8px;
}

.team-card-body ul {
  list-style: none;
  padding: 0;
}

.team-card-body li {
  font-size: 0.85rem;
  color: var(--on-surface-variant);
  padding: 4px 0 4px 20px;
  position: relative;
}

.team-card-body li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.6rem;
  top: 7px;
}

/* CLIENTS PAGE */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.client-card {
  background: var(--surface-lowest);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  font-weight: 500;
  color: var(--on-surface);
  transition: var(--transition);
  font-size: 0.95rem;
  box-shadow: var(--shadow-sm);
}

.client-card:hover {
  box-shadow: var(--shadow-ambient);
  transform: translateY(-2px);
}

/* CONTACT */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-form {
  background: var(--surface-lowest);
  border-radius: var(--radius-md);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--on-surface);
  margin-bottom: 6px;
}

.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 14px 18px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: 'Public Sans', sans-serif;
  transition: var(--transition);
  background: var(--surface-highest);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  /* Ghost border focus */
  box-shadow: 0 0 0 2px rgba(0, 36, 68, 0.4);
  background: var(--surface-lowest);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-card {
  background: var(--surface-lowest);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.info-card:hover {
  box-shadow: var(--shadow-ambient);
}

.info-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-card h3 .icon {
  color: var(--primary);
}

.info-card p, .info-card a {
  color: var(--on-surface-variant);
  font-size: 0.92rem;
}

.info-card a:hover {
  color: var(--accent);
}

.map-placeholder {
  width: 100%;
  height: 260px;
  background: var(--surface-high);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-surface-variant);
  font-size: 0.9rem;
}

/* FOOTER */
.footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer h4 {
  color: #fff;
  font-family: 'Public Sans', sans-serif;
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer p {
  font-size: 0.88rem;
  line-height: 1.6;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 0.88rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 0.82rem;
  background: var(--primary-container);
}

/* SERVICES PAGE TABS */
.service-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.service-tab {
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: var(--transition);
  background: var(--surface-highest);
  color: var(--on-surface-variant);
  font-family: 'Public Sans', sans-serif;
  border: none;
}

.service-tab.active, .service-tab:hover {
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.sub-services-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 32px;
}

.sub-service-item {
  background: var(--surface-lowest);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.sub-service-item:hover {
  box-shadow: var(--shadow-ambient);
}

.sub-service-item h4 {
  font-size: 1rem;
  color: var(--on-surface);
  margin-bottom: 6px;
}

.sub-service-item p {
  font-size: 0.88rem;
  color: var(--on-surface-variant);
}

/* WHY CHOOSE US */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.why-card {
  background: var(--surface-lowest);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-ambient);
}

.why-card .icon {
  width: 56px;
  height: 56px;
  background: var(--surface-highest);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--primary);
  font-size: 1.4rem;
}

.why-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.why-card p {
  font-size: 0.88rem;
  color: var(--on-surface-variant);
}

/* CTA SECTION */
.cta-section {
  background: var(--primary-fixed);
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--on-primary-fixed-variant);
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.cta-section p {
  color: var(--on-surface-variant);
  margin-bottom: 32px;
  font-size: 1.05rem;
}

/* REGISTRATIONS */
.reg-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.reg-card {
  background: var(--surface-lowest);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.reg-card:hover {
  box-shadow: var(--shadow-ambient);
}

.reg-card .icon {
  width: 52px;
  height: 52px;
  background: var(--surface-high);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.3rem;
  flex-shrink: 0;
}

.reg-card h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.reg-card p {
  font-size: 0.88rem;
  color: var(--on-surface-variant);
}

/* ANIMATIONS */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* RESPONSIVE */
@media(max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-preview { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media(max-width: 768px) {
  .navbar.scrolled {
    background: rgba(250, 249, 252, 0.98);
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--surface);
    flex-direction: column;
    padding: 80px 32px;
    gap: 4px;
    transition: var(--transition);
    box-shadow: var(--shadow-ambient);
  }
  .nav-links.open { right: 0; }
  .nav-links a { padding: 12px 16px; width: 100%; color: var(--on-surface); }
  .hamburger { display: flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--surface-highest); }
  .stat-item { border: none; }
  .services-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  .section { padding: 60px 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .reg-cards { grid-template-columns: 1fr; }
  .sub-services-list { grid-template-columns: 1fr; }
}